The Mountain Meadows Massacre (1950) by Juanita Brooks was the first definitive study of the Mountain Meadows Massacre.

Juanita Pulsipher Brooks was an American historian and author, specializing in the American West and Mormon history. Her most notable contribution was her book related to the Mountain Meadows Massacre, to which her grandfather Dudley Leavitt was sometimes linked, and which caused tension between her and the church authorities. She also made significant archival contributions in the form of collected pioneer diaries documenting early Mormon history in the Dixie, Utah area. Brooks remained a faithful believer throughout her life.